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Old 29-09-2017, 08:33 AM
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sil (Steve)
Not even a speck of dust

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Join Date: Jun 2012
Location: Canberra
Posts: 1,474
looks like a focusing problem to me. seen it a lot on older/cheaper brand lenses due to flex/alignment problems.

You could look into rounding stars with your processing software. you're getting enough detail in Sculptor (?) to process a stack for sure.
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